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CVE-2021-34625— WP Upload Restriction <= 2.2.3 - Authenticated Stored Cross-Site Scripting

Quick assessment

Affected
WP Upload Restriction WP Upload Restriction
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress是WordPress（Wordpress）基金会的一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。 WordPress的WP 存在跨站脚本漏洞，该漏洞源于WP上传限制WordPress插件的saveCustomType函数存在漏洞。攻击者可利用该漏洞允许低级别认证用户注入任意web脚本。

CVSS 6.4 · Medium EPSS 0.63% · P48

Possible ATT&CK Techniques 1 AI

T1505.003 · Web Shell
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I. Basic Information for CVE-2021-34625

Vulnerability Information
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Vulnerability Title
WP Upload Restriction <= 2.2.3 - Authenticated Stored Cross-Site Scripting
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the saveCustomType function of the WP Upload Restriction WordPress plugin allows low-level authenticated users to inject arbitrary web scripts. This issue affects versions 2.2.3 and prior.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress是WordPress（Wordpress）基金会的一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。 WordPress的WP 存在跨站脚本漏洞，该漏洞源于WP上传限制WordPress插件的saveCustomType函数存在漏洞。攻击者可利用该漏洞允许低级别认证用户注入任意web脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
WP Upload Restriction WP Upload Restriction 2.2.3 ~ 2.2.3 -

II. Public POCs for CVE-2021-34625

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III. Intelligence Information for CVE-2021-34625

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Vendor Advisories for CVE-2021-34625 (1)

Same Patch Batch · WP Upload Restriction · 2021-07-07 · 3 CVEs total

CVE-2021-34626 4.3 MEDIUM WP Upload Restriction <= 2.2.3 - Missing Access Control in deleteCustomType function
CVE-2021-34627 4.3 MEDIUM WP Upload Restriction <= 2.2.3 - Missing Access Control in getSelectedMimeTypesByRole func

IV. Related Vulnerabilities

Same product: WP Upload Restriction
Same vendor: WP Upload Restriction
Same weakness: CWE-79

V. Comments for CVE-2021-34625

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